MOUSSE, John de la, French missionary. He was a missionary in Sout, h America from 1684 till 1691. Most of this time was spent in French Guiana, where his zeal was indefatigable and where he braved innumerable dangers, being attacked almost every year by the fever of the country, which is generally fatal. His works, most of which are preserved in manuscript in the library of Lyons, are "Relation du second voyage du P. Jean de la Mousse, chez les Indiens de la riviere de Sinamary en 1684 ..... Relation du troisieme voyage dlu meme, chez ins Galibis, en 1686 ..... Lettres ecrites de Cayenne, en 1686" ; and "Relation du voyage du P. Jean de la Molisse, dans Ins isles de l'Amerique et dans la terre-ferme, pendant les anndes 1688, 1689, 1690, et 1691."